Noni

Morinda citrifolia is a fruit-bearing tree in the coffee family, Rubiaceae, commonly known as noni or Indian mulberry, among many other names. It is native to Southeast Asia and Australasia, was spread across the Pacific by Polynesian sailors, and is now cultivated throughout the tropics. It is a shrub or small tree with grey-brown bark, large opposite leaves, and dense heads of white tubular flowers. It grows in shady forests and on open rocky or sandy shores, and tolerates saline soils and drought. The plant contains anthraquinones, which can be harmful to human health. Although the fresh fruit is edible, its pungent odour makes it worthwhile only as a famine food. Green fruit, leaves and root or rhizomes might have been used in Polynesian cultures as a general tonic, in addition to the fruit's traditional place as a famine food. There is no confirmed evidence of clinical efficacy for any intended use, and in 2018 a Hawaiian manufacturer was issued an FDA warning letter for marketing unapproved drugs.